Jameco Electronics Rabbit 3000 - Manual (Page 223)

214 Rabbit 3000 Microprocessor
so low as to be undetectable, except perhaps for extremely weak stations. The effect of a
pure harmonic on TV reception is to create a herringbone pattern created by a harmonic
falling within the station’s band. If the spreader is engaged the pattern will disappear
unless the station is very weak, in which case the interference will be seen as noise distrib-
uted over the screen.